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Finding the Fourth Proportional to 72,693,124.80, 109,039,687.20 and 26,634,904.80

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Solution

The fourth proportional to 72,693,124.80, 109,039,687.20 and 26,634,904.80 is: 39,952,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,693,124.80 : 109,039,687.20 = 26,634,904.80 : x
  2. Step 2: Convert to fraction form
    72,693,124.80/109,039,687.20 = 26,634,904.80/x
  3. Step 3: Cross multiply
    72,693,124.80x = 109,039,687.20 × 26,634,904.80
  4. Step 4: Simplify right side
    72,693,124.80x = 2,904,261,687,993,778.50
  5. Step 5: Solve for x
    x = 2,904,261,687,993,778.50/72,693,124.80
  6. Step 6: Final answer
    x = 39,952,357.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.